215567877

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{349}}^1\times {\mathrm{439}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 335104000

約数和(自身を除く): 119536123

約数列:

[1, 3, 7, 21, 67, 201, 349, 439, 469, 1047, 1317, 1407, 2443, 3073, 7329, 9219, 23383, 29413, 70149, 88239, 153211, 163681, 205891, 459633, 491043, 617673, 1072477, 3217431, 10265137, 30795411, 71855959, 215567877]

約数ペア:

[(1, 215567877), (3, 71855959), (7, 30795411), (21, 10265137), (67, 3217431), (201, 1072477), (349, 617673), (439, 491043), (469, 459633), (1047, 205891), (1317, 163681), (1407, 153211), (2443, 88239), (3073, 70149), (7329, 29413), (9219, 23383)]